Home / 72,442,062.45-99,970,767.41-39,403,080.18

Finding the Fourth Proportional to 72,442,062.45, 99,970,767.41 and 39,403,080.18

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Solution

The fourth proportional to 72,442,062.45, 99,970,767.41 and 39,403,080.18 is: 54,376,642.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,442,062.45 : 99,970,767.41 = 39,403,080.18 : x
  2. Step 2: Convert to fraction form
    72,442,062.45/99,970,767.41 = 39,403,080.18/x
  3. Step 3: Cross multiply
    72,442,062.45x = 99,970,767.41 × 39,403,080.18
  4. Step 4: Simplify right side
    72,442,062.45x = 3,939,156,163,715,345.50
  5. Step 5: Solve for x
    x = 3,939,156,163,715,345.50/72,442,062.45
  6. Step 6: Final answer
    x = 54,376,642.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.